Spatial multi-omic map of human myocardial infarction

Area of Science:

• Cardiovascular Biology
• Genomics
• Systems Biology

Background:

• Myocardial infarction (heart attack) is a major global cause of death.
• Current therapies are limited by an incomplete understanding of cardiac remodeling post-heart attack.
• Reducing late-stage mortality requires deeper insights into these remodeling processes.

Purpose of the Study:

• To create a high-resolution molecular map of human cardiac remodeling following myocardial infarction.
• To integrate multi-modal data for a comprehensive understanding of cellular and molecular changes.
• To identify disease-specific cardiac cell states and their spatial interactions.

Main Methods:

• Single-cell gene expression profiling
• Chromatin accessibility assays
• Spatial transcriptomic profiling
• Multi-modal data integration

Main Results:

• Generated an integrative map of human cardiac remodeling after myocardial infarction.
• Identified and validated disease-specific cardiac cell states across different tissue zones and time points.
• Elucidated molecular principles of cardiac tissue organization, including a cardiomyocyte and myeloid continuum post-injury.
• Revealed changes in cardiac transcriptome and epigenome, highlighting distinct injury, repair, and remodeling structures.

Conclusions:

• The study provides an essential molecular reference map for human myocardial infarction.
• The findings offer insights into the spatial context and interdependencies of cardiac cell types during disease.
• This work lays the foundation for advanced mechanistic studies and novel therapeutic strategies for cardiac disease.